Liverpool hero Steve McManaman slammed Adrian after his blunder in victory at Southampton.
Danny Ings struck after a hashed clearance by the Reds goalkeeper and McManaman should have learned from nearly making the same mistake in the first half at St Mary's.
He told Premier League Productions: "From the sublime during the week to the ridiculous today.
To a certain extent you're saying exactly the same thing when it happened to Alisson.
That is your warning, that does not happen again.
Eighty-first, 82nd minute, just kick it as far as you can to the end of the pitch.
You don't want to be messing around when you're 2-0 up and you're cruising to a victory after the week they've had.
And that might be the warning sign that he will not do that ever again in a Liverpool shirt."
